Getting Started When should I start pumping breast milk? You can start pumping after your baby is born. If breastfeeding is going well, it’s best to wait until you and your baby feel comfortable before pumping regularly. If your baby is premature, unwell, or unable to latch, start expressing milk as soon as possible and aim for 8–12 sessions in 24 hours, including once at night. Hospital staff or a lactation specialist can help guide you. How do I choose the right pump or fla